abstract：<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>js控制字数限制</title> <style type="text/css"> body{ fo
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>js控制字数限制</title>
<style type="text/css">
body{
font-size: 12px;
}
.box{
width: 600px;
height: 160px;
border: 10px solid pink;
margin: 0px auto;
padding: 10px;
}
img{
float: left;
}
.box1{
float: right;
width: 150px;
height: 24px;
text-align: right;
font-size: 14px;
color: #888;
}
.box1 span{
font-size: 16px;
font-weight: bold;
}
#text{
width: 600px;
height: 100px;
border: 1px solid #888;
margin-top: 5px;
}
.box #sp1,#sp2,#sp3,#sp4,#sp5,#sp6{
float: left;
width: 30px;
height: 32px;
line-height: 32px;
padding-left: 26px;
}
#sp1{
background: url(images/an5.png) no-repeat left center;
}
#sp2{
background: url(images/an4.png) no-repeat left center;
}
#sp3{
background: url(images/an3.png) no-repeat left center;
}
#sp4{
background: url(images/an2.png) no-repeat left center;
}
#sp5{
background: url(images/an1.png) no-repeat left center;
width: 40px;
}
#sp6{
margin-left: 150px;
margin-right: 15px;
color: #888;
}
#bt{
float: left;
width: 80px;
height: 30px;
border: none;
background: #ffc09f;
color: #fff;
border-radius: 5px;
}
</style>
</head>
<body>
<div class="box">
<img src="images/12.png"/>
<div class="box1">还可以输入<span id="number"></span>字</div>
<textarea id="text" name="" rows="" cols=""></textarea>
<span id="sp1">表情</span>
<span id="sp2">图片</span>
<span id="sp3">视频</span>
<span id="sp4">话题</span>
<span id="sp5">长微博</span>
<span id="sp6">公开</span>
<input type="button" value="发布" id="bt"/>
</div>
</body>
</html>总结：采用背景图的方式可以添加图片，但是对于后期的维护不是很方便，对于带有后台的网站来说，请问如何可以通过后台随意的更换这个图片呢？